package com.java.basic;
class ClassAB{
    Object sum(long a,int b)throws Exception{
        return a+b;
    }
}
class ClassCD extends  ClassAB{
    public Long sum(long a,int b)throws RuntimeException{
        return a+b;
    }
}
public class ExtendsOWTests {
    public static void main(String[] args) {

    }
}
